Solve.The annual depreciation rate r (0 < r < 1) of a car purchased for P dollars and worth A dollars after t years can be modeled by the following formula: 
Find the depreciation rate of a car that is purchased for $31,000 and is sold 4 years later for $14,000. Express your answer as a percentage, and round the answer to the nearest whole percentage.
A. -18%
B. 18%
C. 82%
D. -82%
Answer: B
Mathematics
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and simplify your answer.
Fill in the blank(s) with the appropriate word(s).
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Solve the problem. Round to the nearest tenth, if necessaryFind the part if the whole is 24 and the percent is 75.
A. 12 B. 312.5 C. 2.4 D. 18
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Solve the triangle. Find the angles ? and ? first.a = 19, b = 16, c = 11
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Mathematics